Justin Jap Tjon

The police are urgently looking for more information on Amsterdam assassination victim Justin Jap Tjon. Investigating officers are also looking for a number of specific witnesses to the 25-year-old man's assassination in Osdorp last week, AT5 reports.

A new wave of assassinations seems to have hit the Nethelrands. In less than five weeks, four people were assassinated, two of them in this week, the Telegraaf reports.

Four assassinations in five weeks is a remarkably high number, given the fact that the average in the Netherlands is about eight a year. The high number is on par for the past three years. At least 60 assassinations were committed during this time. That massive increase is even more remarkable when you take into account that the total number of murders in the Netherlands decreased by about 30 percent since 2002.

The man shot and killed in Amsterdam Osdorp on Tuesday was 25-year-old Justin Jap Tjon, according to Het Parool. He was not known as a hardened criminal with an impressive reputation, the newspaper reports based on its own research.